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Engine cranks but won't start just stopped running?

Tiny
DCK
  • MEMBER
  • 1998 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 108,000 MILES
My 98 Altima was idling at warmup the other day and just stopped running. Tried restarting several times over multiple days without any success. I pulled off the cover to check timing chains. Both intact as was the tensioner bar.

Plugs are sparking and fuel is getting to the plugs. When attempting to start the engine is making a steady sound, kind of difficult to really describe.

Any suggestions on what may be going on?
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Wednesday, December 12th, 2007 AT 11:43 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the engine compression, that checks out the valve and ignition timing is off.
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Thursday, December 13th, 2007 AT 3:01 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,665 POSTS
Yep I agree with RASMATAZ, though the timing chains look intact they could have jumped which will make the engine sounds funny, please go over this video to help see what I am talking about.

https://youtu.be/lXLJbuAZ4CE?si=jH8I1avcbrChLHMC

Here is how you check the compression to confirm the timing chain issue.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over these guides and get back to us.
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Saturday, September 7th, 2024 AT 8:44 AM

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